How long does it take to fly to Islip, New York?

The flight from Colorado to Islip, New York depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Denver (a popular airport in Colorado) to New York John F Kennedy Intl Airport (the most popular airport in Islip, New York), then the flight time is 3h 40m on average. If you fly from Vail (another popular airport in Colorado) to New York John F Kennedy Intl Airport, then the average flight time is 4h 05m.

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?

Prices for flights from Colorado to Islip Long Island Airport are updated daily.

How many operators does momondo search for flights from Colorado to Islip Long Island Airport?

There is 1 operator available for flights from Colorado to Islip Long Island Airport as of January 2026.

How old do you have to be to fly from Colorado to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$76 Cheap Flights from Colorado to Islip in 2026

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Find the cheapest flights from Colorado to New York

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:28 pm - 8:40 am

DEN

ISP

17h 12m1 stop

7:43 pm - 9:35 am

ISP

DEN

15h 52m1 stop

$171Frontier

Sat, Jan 31 - Mon, Feb 2

6:15 am - 6:38 pm

DEN

ISP

10h 23m1 stop

7:43 pm - 9:35 am

ISP

DEN

15h 52m1 stop

$191Frontier

Fri, Jan 30 - Mon, Feb 2

9:25 am - 12:47 pm

DEN

ISP

25h 22m1 stop

6:00 am - 9:10 am

ISP

DEN

29h 10m1 stop

$196Frontier

Thu, Mar 26 - Tue, Apr 7

6:15 am - 6:38 pm

DEN

ISP

10h 23m1 stop

9:25 am - 8:30 am

ISP

DEN

25h 05m1 stop

$211Frontier

Fri, Jan 30 - Sun, Feb 1

6:20 pm - 8:40 am

DEN

ISP

12h 20m1 stop

3:34 pm - 4:38 pm

ISP

DEN

27h 04m1 stop

$215Frontier

Tue, Mar 3 - Thu, Mar 5

6:00 am - 4:12 pm

DEN

ISP

8h 12m1 stop

1:22 pm - 8:20 am

ISP

DEN

20h 58m1 stop

$219Frontier

Thu, Mar 5 - Mon, Mar 9

11:59 pm - 12:47 pm

DEN

ISP

10h 48m1 stop

10:43 am - 11:13 pm

ISP

DEN

14h 30m1 stop

$220Frontier

Thu, Mar 12 - Mon, Mar 16

9:20 am - 9:48 am

DEN

ISP

22h 28m1 stop

1:22 pm - 11:09 pm

ISP

DEN

11h 47m1 stop

$221Frontier

Thu, Mar 12 - Mon, Mar 23

10:00 am - 7:04 pm

DEN

ISP

7h 04m1 stop

3:34 pm - 10:59 pm

ISP

DEN

9h 25m1 stop

$226Frontier

Mon, Feb 16 - Thu, Feb 26

5:00 am - 5:00 pm

COS

ISP

10h 00m2 stops

11:50 am - 9:30 pm

ISP

COS

11h 40m2 stops

$409Southwest

Thu, Feb 26 - Mon, Mar 2

Frontier flights from Colorado to Islip, New York

Our best Frontier deals on Colorado to Islip, New York flight tickets

Frontier

Jan 31

DEN1:28 pmDenver Intl

17h 12m

1 stop

ISP8:40 amIslip Long Island

Feb 2

ISP7:43 pmIslip Long Island

15h 52m

1 stop

DEN9:35 amDenver Intl

$171

Frontier

Jan 30

DEN6:15 amDenver Intl

10h 23m

1 stop

ISP6:38 pmIslip Long Island

Feb 2

ISP7:43 pmIslip Long Island

15h 52m

1 stop

DEN9:35 amDenver Intl

$191

Frontier

Mar 26

DEN9:25 amDenver Intl

25h 22m

1 stop

ISP12:47 pmIslip Long Island

Apr 7

ISP6:00 amIslip Long Island

29h 10m

1 stop

DEN9:10 amDenver Intl

$196

Southwest flights from Colorado to Islip, New York

Our best Southwest deals on Colorado to Islip, New York flight tickets

Southwest

Feb 26

COS5:00 amColorado Springs

10h 00m

2 stops

ISP5:00 pmIslip Long Island

Mar 2

ISP11:50 amIslip Long Island

11h 40m

2 stops

COS9:30 pmColorado Springs

$409

Southwest

Feb 17

DEN10:40 amDenver Intl

9h 40m

2 stops

ISP10:20 pmIslip Long Island

Feb 20

ISP1:10 pmIslip Long Island

11h 20m

2 stops

DEN10:30 pmDenver Intl

$458

Southwest

Jan 22

DEN6:20 amDenver Intl

7h 55m

1 stop

ISP4:15 pmIslip Long Island

Jan 28

ISP9:15 amIslip Long Island

8h 00m

1 stop

DEN3:15 pmDenver Intl

$772

Fly from

Fly to

Route

Depart

Return

Price

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 1/31

1:28 pm-8:40 am

1 stop17h 12m

Islip Long Island

Mon 2/2

7:43 pm-9:35 am

1 stop15h 52m

$171

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 1/30

6:15 am-6:38 pm

1 stop10h 23m

Islip Long Island

Mon 2/2

7:43 pm-9:35 am

1 stop15h 52m

$191

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 3/26

9:25 am-12:47 pm

1 stop25h 22m

Islip Long Island

Tue 4/7

6:00 am-9:10 am

1 stop29h 10m

$196

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 1/30

6:15 am-6:38 pm

1 stop10h 23m

Islip Long Island

Sun 2/1

9:25 am-8:30 am

1 stop25h 05m

$211

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 3/3

6:20 pm-8:40 am

1 stop12h 20m

Islip Long Island

Thu 3/5

3:34 pm-4:38 pm

1 stop27h 04m

$215

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 3/5

6:00 am-4:12 pm

1 stop8h 12m

Islip Long Island

Mon 3/9

1:22 pm-8:20 am

1 stop20h 58m

$219

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 3/12

11:59 pm-12:47 pm

1 stop10h 48m

Islip Long Island

Mon 3/16

10:43 am-11:13 pm

1 stop14h 30m

$220

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 3/12

9:20 am-9:48 am

1 stop22h 28m

Islip Long Island

Mon 3/23

1:22 pm-11:09 pm

1 stop11h 47m

$221

DenverIslip

DEN - ISP

DENISP

Denver Intl

Mon 2/16

10:00 am-7:04 pm

1 stop7h 04m

Islip Long Island

Thu 2/26

3:34 pm-10:59 pm

1 stop9h 25m

$226

Colorado SpringsIslip

COS - ISP

COSISP

Colorado Springs

Thu 2/26

5:00 am-5:00 pm

2 stops10h 00m

Islip Long Island

Mon 3/2

11:50 am-9:30 pm

2 stops11h 40m

$409

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Airlines

Other information

What is the cheapest airline that flies from Colorado to Islip Long Island?

Frontier is the most popular carrier operating from Colorado to Islip Long Island

What airlines fly to Islip, New York?

United Airlines, Delta and Frontier are the top three most popular airlines that fly to Islip, New York from Colorado according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 6 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

Cheap Colorado to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Islip, New York

Fastest flight time	8h 04m
Direct flights	None

The fastest flight from Colorado to Islip, New York takes 8h 04m

There are no direct flights from Colorado to Islip, New York. There are no popular flight routes from Colorado to Islip, New York.

Search flight deals

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?
Prices for flights from Colorado to Islip Long Island Airport are updated daily.
How many operators does momondo search for flights from Colorado to Islip Long Island Airport?
There is 1 operator available for flights from Colorado to Islip Long Island Airport as of January 2026.
How old do you have to be to fly from Colorado to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Islip, New York

Compare and see reviews for airlines that fly from Colorado to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $357	Free Cancellation	Rating 8.0 4,253 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Islip?

It is quick and easy to find Colorado to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

Can I find flights from Colorado to Islip with flexible booking policies on momondo?

momondo does allow users to show only those flights to Islip from Colorado which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Colorado.

I’m not ready to book a flight from Colorado to Islip right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Islip now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Islip and let you know when they change.